9494978223 has 16 divisors (see below), whose sum is σ = 12779981280. Its totient is φ = 6270262656.

The previous prime is 9494978173. The next prime is 9494978257. The reversal of 9494978223 is 3228794949.

It is not a de Polignac number, because 9494978223 - 2¹² = 9494974127 is a prime.

It is a super-2 number, since 2×9494978223² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9494978123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100261 + ... + 170417.

It is an arithmetic number, because the mean of its divisors is an integer number (798748830).

Almost surely, 2^9494978223 is an apocalyptic number.

9494978223 is a deficient number, since it is larger than the sum of its proper divisors (3285003057).

9494978223 is a wasteful number, since it uses less digits than its factorization.

9494978223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70586.

The product of its digits is 7838208, while the sum is 57.

The square root of 9494978223 is about 97442.1788703434. The cubic root of 9494978223 is about 2117.5385445726.

The spelling of 9494978223 in words is "nine billion, four hundred ninety-four million, nine hundred seventy-eight thousand, two hundred twenty-three".